This is mostly just for the DNS admins and hobbyists out there. If you have domains with web.com / networksolutions.com and you have defined custom nameservers meaning you put in an IP with a domain name and in the past it updated the root DNS servers then do not change it. The UI will let you change it but they no longer have the ability to update the root DNS servers with your custom nameservers that you or your company manage yourselves. The NetworkSolutions.com UI will let you do it, but...